L1-47-49-51 - Inverter Pcb A3P 16 V Dc Abnormal; L1-48-50-52 - Inverter Pcb A6P 16 V Dc Abnormal; L2-01-02-03 - Power Supply Abnormality During Test Run - Daikin VRV IV+ Service Manual

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2.3.72 L1-47-49-51 – Inverter PCB A3P 16 V DC
abnormal
Main error code Sub error code
L1 47
49
51
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Trigger Effect
Main PCB detects Unit will stop
voltage/current errors operating.
on output waveform
or current read-out.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed
order.
1 Perform a check of the main PCB. See
page 106.
Possible cause: Faulty main PCB or wrong capacity setting.
2 Perform a check of the inverter PCB A3P. See
PCB" on page 99.
Possible cause: Faulty inverter PCB A3P or non‑compatible
inverter PCB.
3 Perform a check of the compressor. See
page 82.
Possible cause: Faulty compressor.
4 Check if the power supply is conform with the regulations. See
"4.1 Electrical circuit" on page 130.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
2.3.73 L1-48-50-52 – Inverter PCB A6P 16 V DC
abnormal
Main error code Sub error code
L1 48
50
52
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
Trigger
Main PCB detects
voltage/current errors
Unit
on output waveform
or current read-out.
Main
Sub 1
To solve the error code
Sub 2
1 Perform a check of the main PCB. See
Reset
2 Perform a check of the inverter PCB A6P. See
Manual reset via user
interface.
Power reset at
outdoor unit.
3 Perform a check of the compressor. See
4 Check if the power supply is conform with the regulations. See
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
2.3.74
Main error code
L2
Trigger
Main PCB detects 50
Hz zero-crossing
Unit
error.
Main
Sub 1
Sub 2
To solve the error code
Effect
Unit will stop
operating.
INFORMATION
It is recommended to perform the checks in the listed
order.
page 106.
Possible cause: Faulty main PCB or wrong capacity setting.
PCB" on page 99.
Possible cause: Faulty inverter PCB A6P or non‑compatible
inverter PCB.
page 82.
Possible cause: Faulty compressor.
"4.1 Electrical circuit" on page 130.
Possible cause:
▪ Faulty or disturbance of the power supply (imbalance
>10%),
▪ Power drop,
▪ Short circuit.
INFORMATION
If all procedures listed above have been performed and the
problem is still present, contact the helpdesk.
L2-01-02-03 – Power supply abnormality
during test run
Sub error code
01
02
03
INFORMATION
Main, Sub 1 and Sub 2 indications are relevant in multiple
outdoor unit configurations. Main outdoor unit is the unit to
which F1‑F2 IN transmission line is connected. Main, Sub
1 and Sub 2 outdoor units can be identified by field setting
1‑00.
Effect
Unit stops and retries
after guard timer (3
minutes) - infinite
cycle.
INFORMATION
It is recommended to perform the checks in the listed
order.
2 Troubleshooting
Reset
Manual reset via user
interface.
Power reset at
outdoor unit.
"3.9 Main PCB" on
"3.8 Inverter
"3.2 Compressor" on
Unit
Main
Sub 1
Sub 2
Reset
Automatic reset when
within zero-crossing
interval range.
Power reset at
outdoor unit.
Service manual
39